Audio Remote Switch Does Not Work Properly (With Navigation)

Symptom Troubleshooting: Audio remote switch does not work properly

Audio remote switch does not work properly (with navigation)

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Turn on the audio-navigation unit, and check the audio remote switch operation (volume up, volume down, CH (UP), CH (DOWN), MODE).

Is the audio system operation OK?
YES - Intermittent failure, the audio remote switch is OK at this time. Check for loose connections.

NO - Go to step 3.


3. Test the audio remote switch. Audio Remote Switch Test

Is the audio remote switch OK?
YES - Go to step 4.

NO - Replace the audio remote, HFL-navigation voice control switch. Steering Wheel Disassembly/Reassembly


4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

5. Remove the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)

6. Disconnect audio-navigation unit connector A (24P).

7. Reconnect the audio remote switch, and measure the resistance between audio-navigation unit connector A (24P) terminals No. 5 and No. 16 as specified in the table.

AUDIO REMOTE SWITCH TABLE





Is the resistance OK?
YES - Go to step 8.

NO - Repair short or high resistance in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel. Service and Repair






8. Disconnect the audio remote, HFL-navigation voice control switch 12P connector.

9. Check for continuity between body ground and terminals No. 5 and No. 16 of audio-navigation unit connector A (24P) individually.

Is there continuity?
YES - Repair short to body ground in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel. Service and Repair

NO - Replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)